US2457066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Access door for liquid containers
Assignee: Glenn L Martin Co
•
Filing: 1943-08-25
•
Granted: 1948-12-21
•
Expires: 1963-08-25
Abstract
No abstract record available.
Inventors
- 👤 Francis J Pepersack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:00
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/02; Y; Y10; Y10S; Y10S220/00; Y10S220/04; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1406478A
Cited
US1480782A
Cited
GB443979A
Cited
GB496505A
Cited
US2326263A
Cited
US2336885A
Cited
US2370799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |